Grain growth anomaly in strontium titanate

The grain growth studies presented here show anomalies in the growth dynamics in SrTiO(3). For the temperature range investigated, the overall grain growth does not follow the classical Arrhenius-type temperature dependence. At a critical temperature the grain growth rate decreases substantially with increasing temperature. Such a decrease is reported for the first time in bulk ceramic material. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.